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nitrogen contaminated groundwater News

Webinar overview Gain insight on the integration of nitrogen geochemistry and isotopes may be used for tracing the origin of nitrogen species and their transformations in the subsurface in this Webinar, which is a part of the Environmental Isotopes in Groundwater Studies Webinar series*. Nitrogen represents one of the most ubiquitous and challenging contaminants in ...

The U.S. Department of Justice, the U.S. Environmental Protection Agency and Apache Nitrogen Products, Inc. entered into a consent decree for future groundwater and soil cleanup at the Apache Powder Superfund Site, near St. David, Ariz. Apache Nitrogen Products will continue to remove nitrate and perchlorate from groundwater and perform long-term groundwater monitoring. The work will cost up to ...

Numerous studies over the past four decades have established that pesticides, which are typically applied at the land surface, can move downward through the unsaturated zone to reach the water table at detectable concentrations. The downward movement of pesticide degradation products, formed in situ, can also contribute to the contamination of ground water. Once in ground water, pesticides and ...

Microorganisms can indeed live in extreme environments, but the ones that do are highly adapted to survive and little else, according to a collaboration that includes Department of Energy's Oak Ridge National Laboratory and Joint Genome Institute (JGI) and the University of Oklahoma. The metagenomic study of a 'stressed' microbial community in groundwater near a former waste disposal pond site on ...

Palestinian and German scientists have recommended to the authorities in the Gaza Strip that they take immediate measures to combat excessive nitrate levels in the drinking water. 90 per cent of their water samples were found to contain nitrate concentrations that were between two and eight times higher than the limit recommended by the World Health Organization (WHO), say the researchers from ...

From May 30th until June 3rd econ industries will present its method for remediation of contaminated soil at the IFAT – World’s Leading Trade Fair for Environmental Technologies in Munich (Hall B3, stand 251). The technology favoured by the cleantech company from Starnberg is vacuum distillation. The VacuDry® technology was ...

Denitrification is the process carried out by bacteria that converts nitrites and nitrates to nitrogen, nitric oxide and nitrous oxide gases. Two of these gases have been linked with ozone layer depletion and global warming. Denitrification is an anaerobic process and occurs in environments where oxygen levels are depleted, such as within soils and groundwater. The Hiden HPR-40 membrane inlet ...

Bacteria and nitrate are widespread in the environment, so every household water well owner should regularly test their water to make sure no health risk exists, the National Ground Water Association recommended today. While most bacteria found in water do not cause disease, disease-causing bacteria called pathogens can exist in well water given the right circumstances, NGWA said. Nitrate is not ...

Today the U.S. Environmental Protection Agency announced that Biopico Systems of Irvine, Calif., CLEW of Pasadena, Calif., and AquaNano LLC of Monrovia, Calif. will receive $300,000 in green technology contracts for their innovative water testing and treatment system proposals. The contracts are part of $2 million awarded to 21 small businesses nationwide to advance sustainable and innovative ...

A joint research project conducted by the Australian Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Western Australian Department of Water has shown that some mining by-products can be effective in preventing nutrients from entering river systems, thereby reducing the potential for algal blooms.A range of mining industry by-product materials was investigated to ...

The Environmental Protection Agency is aiming to issue by May 2015 drinking water health advisories for cyanobacteria, the harmful forms of blue-green algae that contaminated water supplies in Toledo, Ohio, and resulted in a weekend-long ban in early August, an agency official said Sept. 29. The agency is working on health advisories for microcystin L-R and cylindrospermopsin, with plans to have ...

A joint project between CSIRO and the Western Australian Department of Water investigated a range of mining industry by-product materials, which are currently unused, to determine whether they could instead be used to filter nutrients from natural waters or to treat wastewater that would otherwise be discarded. CSIRO project leader, Dr Grant Douglas, says the use of abundant, low-cost by-product ...

EPA yesterday released the Agency's Performance and Accountability Report for Fiscal Year 2007. Among the report's FY 2007 performance highlights: Through EPA's Energy Star program, consumers saved more than $14 billion on their energy bills by purchasing more than 300 million energy-saving labeled products, constructing almost 200,000 Energy Star new homes, tracking and improving the energy ...

The National Ground Water Association recommends household well owners test their water at least annually for bacteria, nitrate, and any contaminants of local concern. More frequent testing should be considered if: There is a change in the taste, odor, or appearance of the well water, or if a problem occurs such as a broken well cap, inundation by floodwaters, or a new contamination ...

Specifically designed for water reuse applications, the BioBarrier MBR system received the 2009 Technology Merit Award presented by the Environmental Business Journal (EBJ) in the Innovative Water and Wastewater Category. We now bring that same great technology to residential clustered subdivisions and commercial wastewater reuse applications with our latest membrane treatment system, the ...

Engineers in the US are using rocket-thruster technology to create a self-powered sewage treatment process that also reduces greenhouse gas emissions. Using microbes to break down sewage produces nitrous oxide and methane, which contribute to climate change. Now a team at Stanford University in Califronia hopes to increase production of these gases so the methane can be used as fuel and the ...

Fortrans Inc. announces new patent pending technology to mix gases into water and other media. The Dif-JET System is non-fouling and does not depend on bubble technology to mix gases into water. DiF-JET single and combination Gas Infusion Systems are highly efficient at mixing beneficial gases such as oxygen, carbon dioxide, nitrogen and air into water or other media. DiF-JET inline ...

The U.S. Environmental Protection Agency (EPA) has determined that The Nitrate Elimination Company, Inc. (NECi) Method N07-0003 “Method for Nitrate Reductase Nitrate-Nitrogen Analysis” meets all requirements for measurement of nitrate and combined nitrate-nitrite in wastewater. Enzyme-based nitrate analysis will be recommended for inclusion in the list of 40 CFR Part 136 in ...

SAN FRANCISCO – The U.S. Environmental Protection Agency’s enforcement program secured nearly $300 million in on-the-ground environmental improvements in fiscal year 2006, as well as an additional $2 million in commitments from responsible parties to fund community projects with expanded environmental benefits. The EPA took 248 enforcement actions against businesses and government ...

FMC Corporation (NYSE: FMC) announced today that its soil and groundwater remediation technologies will be featured in more than 50 professional papers and poster sessions being presented at the upcoming International Conference on Remediation of Chlorinated and Recalcitrant Compounds. The signature conference, organized by Battelle, attracts more than 1,600 scientists, engineers, ...

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